auto import from //depot/cupcake/@135843

1 files changed, 136 insertions, 0 deletions

diff --git a/core/java/android/webkit/FileLoader.java b/core/java/android/webkit/FileLoader.java
new file mode 100644
index 0000000..54a4c1d
--- /dev/null
+++ b/core/java/android/webkit/FileLoader.java
@@ -0,0 +1,136 @@
+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.webkit;
+
+import com.android.internal.R;
+
+import android.content.Context;
+import android.content.res.AssetManager;
+import android.net.http.EventHandler;
+import android.net.http.Headers;
+import android.os.Environment;
+
+import java.io.File;
+import java.io.FileInputStream;
+
+/**
+ * This class is a concrete implementation of StreamLoader that uses a
+ * file or asset as the source for the stream.
+ *
+ */
+class FileLoader extends StreamLoader {
+
+    private String mPath;  // Full path to the file to load
+    private Context mContext;  // Application context, used for asset loads
+    private boolean mIsAsset;  // Indicates if the load is an asset or not
+    private boolean mAllowFileAccess; // Allow/block file system access
+
+    /**
+     * Construct a FileLoader with the file URL specified as the content
+     * source.
+     *
+     * @param url Full file url pointing to content to be loaded
+     * @param loadListener LoadListener to pass the content to
+     * @param context Context to use to access the asset.
+     * @param asset true if url points to an asset.
+     * @param allowFileAccess true if this WebView is allowed to access files
+     *                        on the file system.
+     */
+    FileLoader(String url, LoadListener loadListener, Context context,
+            boolean asset, boolean allowFileAccess) {
+        super(loadListener);
+        mIsAsset = asset;
+        mContext = context;
+        mAllowFileAccess = allowFileAccess;
+
+        // clean the Url
+        int index = url.indexOf('?');
+        if (mIsAsset) {
+            mPath = index > 0 ? URLUtil.stripAnchor(
+                    url.substring(URLUtil.ASSET_BASE.length(), index)) :
+                    URLUtil.stripAnchor(url.substring(
+                            URLUtil.ASSET_BASE.length()));
+        } else {
+            mPath = index > 0 ? URLUtil.stripAnchor(
+                    url.substring(URLUtil.FILE_BASE.length(), index)) :
+                    URLUtil.stripAnchor(url.substring(
+                            URLUtil.FILE_BASE.length()));
+        }
+    }
+
+    @Override
+    protected boolean setupStreamAndSendStatus() {
+        try {
+            if (mIsAsset) {
+                try {
+                    mDataStream = mContext.getAssets().open(mPath);
+                } catch (java.io.FileNotFoundException ex) {
+                    // try the rest files included in the package
+                    mDataStream = mContext.getAssets().openNonAsset(mPath);
+                }
+            } else {
+                if (!mAllowFileAccess) {
+                    mHandler.error(EventHandler.FILE_ERROR,
+                            mContext.getString(R.string.httpErrorFileNotFound));
+                    return false;
+                }
+
+                mDataStream = new FileInputStream(mPath);
+                mContentLength = (new File(mPath)).length();
+            }
+            mHandler.status(1, 1, 0, "OK");
+
+        } catch (java.io.FileNotFoundException ex) {
+            mHandler.error(
+                    EventHandler.FILE_NOT_FOUND_ERROR,
+                    mContext.getString(R.string.httpErrorFileNotFound) +
+                    " " + ex.getMessage());
+            return false;
+
+        } catch (java.io.IOException ex) {
+            mHandler.error(EventHandler.FILE_ERROR,
+                           mContext.getString(R.string.httpErrorFileNotFound) +
+                           " " + ex.getMessage());
+            return false;
+        }
+        return true;
+    }
+
+    @Override
+    protected void buildHeaders(Headers headers) {
+        // do nothing.
+    }
+
+
+    /**
+     * Construct a FileLoader and instruct it to start loading.
+     *
+     * @param url Full file url pointing to content to be loaded
+     * @param loadListener LoadListener to pass the content to
+     * @param context Context to use to access the asset.
+     * @param asset true if url points to an asset.
+     * @param allowFileAccess true if this FileLoader can load files from the
+     *                        file system.
+     */
+    public static void requestUrl(String url, LoadListener loadListener,
+            Context context, boolean asset, boolean allowFileAccess) {
+        FileLoader loader = new FileLoader(url, loadListener, context, asset,
+                allowFileAccess);
+        loader.load();
+    }
+
+}